Mercury V8 300 User Manual

Trim Up Circuit
When contact 86 of the trim up relay is energized from the trim switch, the trim up relay is energized. Contacts 30 and 87 of the
trim up relay close, completing the circuit to 12 volts (+) to the blue trim motor lead. The trim down relay remains de‑energized.
The trim motor tilts the engine up.
Trim up circuit
a - Trim relay contacts
b - Trim up relay
c - 12 volts (+)
d - To trim motor (+)
e - Trim down relay
f - To trim motor (–)
g - From PCM
85
86
30
87
87a
85
86
30
87
87a
GRN
RED
BLK
(+)
(+)
(+)
67464
a
g
c
d
f
b
e
(–)
GRN/WHT
LT BLU/WHT
(+)
RED
(+)
86
30
87
85
87a
87
87a
86
85
30
RELAY KEY
Relay Components
as Viewed Separated
Relay
Connector
(–)
(–)
RED
RED
BLU
Conventional Midsection (CMS) Power Trim
Page 6C-10 © 2018 Mercury Marine 90-8M0146617 eng JULY 2018

Mercury V8 300 Specifications

General

Brand	Mercury
Model	V8 300
Category	Outboard Motor
Language	English